Answer:
Phloem carry food from the leaves to other parts of the plant
Explanation:
Xylem carry water
Chloroplasts are organelles in cells wich allow the plant to photosynthesise
NEED HELP ASAP
Which of the following increase the speed of action potentials in the nervous system?
Answer:
Where are the answers to choose from?
In any case, the ranvier nodes and myelin increase the speed
HELP !
A DNA strand is provided below. What will be the resulting strand if transcription of
this DNA
occurs? Note: A codon chart has been provided for you
5' T-A-C-C-G-T-A-G-G 3'
Answer:A –U –G –G –C –A –U –C –C
Explanation: it right
Place the steps of constructing a genomic library in order. I. Digest phage with restriction enzyme. II. Lyse cells of interest and precipitate DNA. III. Introduce constructs via transformation into competent E. coli cells. IV. Perform ligation reaction with genome fragments and phage. V. Digest genomic DNA with restriction enzyme.g
Answer:
The correct answer is -
II: lyse cells of interest, precipitate DNA
V. Digest (cut) genomic DNA with restriction enzyme
I. Digest (cut) phage (chromosome) with restriction enzyme so can ligate in the gene in next step!!
IV. Perform ligation (glue plasmid in!) reaction with genome fragments and phage.
III Introduce constructs via transformation into competent E. coli cells.
Explanation:
The total collection of the genomic DNA of an organism is known as the genomic library of the particular organism. In this library, the genomic DNA is inserted and stored in identical vectors.
The genomic library construction involved some major steps that are:
- Extract and purify DNA - lysing and separating the desired DNA of interest.
- Digest the DNA with a restriction enzyme - breaking or digesting DNA into fragments with restriction enzymes
- cut phage (chromosome) with restriction enzyme
- Insert the fragments of DNA into vectors
- introduce these recombinant a host bacterium by transformation, creating a DNA library.
Give two examples of elevation
Answer:
♥️pls sana po nakakatulong♥️
HELPPPP?!!! THANK YOUU
Which of the following is true about alleles?
O (B) Alleles are only inherited from the mother
O (E) Every organism of a given species has a different set of alleles from every other individual of that species
O (A) All genes have two alleles
O (D) Alleles are different forms of a gene
O (C) Alleles are always dominant or recessive
Answer:
A. :D
Explanation:
All genes have 2 alleles because you inherit each allele from your parents:)
Can someone help me with this bio question plss!!!!!!!!
Answer:
it says that plants are the main source of nutrients and energetic materials and when the cow feed on them, it consumes some of the benefits that we miss when we eat beef
Answer:
Question 6: The answer is the energy, because it collects more energy than the cow. When the cow eats plants, the energy from the plant decreases leaving the cow with only little amount.
Question 7: I agree, Because plants holds way more nutrients and energy than meat. I could support that by saying when a herbivore eats from a plant, It only recieves 10%.
When you graph velocity versus time (a velocity-time graph), what variable is
on the y-axis?
A. Velocity
B. Acceleration
c. Displacement
D. Time
Help pleaseee
Answer:
i dont know
Explanation:
i really dont know im just a 12 year old kid struggling with math
how do the structures of a vacuole and a nucleus differ?
A. a vacuole is enclosed within a membrane ,and a nucleus is not enclosed within a membrane.
B. a vacuole is thick fluid , and nucleus is rigid set layers
C. a vacuole contain no water , and a nucleus a mostly water
D. a vacuole contain mostly water, and a nucleus contain mostly DNA
Answer:
D
Explanation:
Vacuoles are pockets that collect water and the cell's junk. The nucleus sends commands to other cell parts and contains DNA.
Why it isn't A: Both have membranes.
Vacuole- tonoplast. Nucleus- Nuclear membran.
Why it isn't B: The Vacuole is not a thick fluid, though it may hold thick fluid.
Why it isn't C: This should be obvious.
Which is common to the life cycles of both flowering and non-flowering plants?
Answer:
Explanation:
Nonflowering plants include ferns, mosses, mushrooms, and many trees. It's obvious nonflowering plants are different from flowering plants because they don't have flowers, but there is also a difference in how they reproduce. While flowering plants only use seeds, nonflowering plants use either seeds or spores.
Hope it's help ❤️
Which of the following correctly describes a cell that is haploid. There is more then one correct answer.
A cell with a single set of chromosomes
Includes zygotes
In humans contains 46 chromosomes
In humans contains 23 chromosomes
All cells except gametes
Includes gametes
A cell with two sets of chromosomes
Explanation:
a cell with a single set of chromosomes
in humans contain 23 chromosomes
includes gametes
How do we know that height in humans
is a polygenic trait and not a single-gene
trait?
A. There is no way to know for sure.
B. People have varying heights.
C. Height is too complex to be controlled by a single gene.
Please help LOL - it’s easy, I just can’t decide between two of them. No links please. I cant open them even tho I know they’re scams
Answer:
if they are dehydrated drink water
if they are hungry eat a sandwhich
Explanation:
What is structure 1?
Answer:
Bro give a chart or something not just a question with no info.
Explanation:
Question 7
5
Parents are exposed to hazardous chemicals. How might this affect their
future offspring?
The chemicals could make the parents sick before they have offspring,
The offspring could inherit damaged DNA from the parents.
The offspring could have red hair
•
Answer:
The offsprings could inherit damaged DNA from the parents.
Explanation:
The hazardous chemicals may cause mutations to the DNA.
Is a bacteria cell more complex than a plant cell?
Why is family history thought to be important and a good predictor of an individual’s disease risk factor?
Because family members most closely represent the unique genomic (DNA) and environmental interactions that individuals experience
Because doctors can determine your family’s risk from your ailments
It is important to know family history so that a doctor can issue the right antibiotic to prevent cancer
So that doctors can know how your 1 st line of defense reacts to antibiotics mi
Answer:
The first answer, Because family members most closely represent the unique genomic (DNA) and environmental interactions that individuals experience. Is right
Explanation:
Someone help me out please
Which step in the Gram stain is the critical step in differentiating Gram negative cells from Gram positive cells?
Answer:
The rapid decolorization with ethanol or acetone
and counterstaining with safranin
When a decolorizer such as alcohol or acetone is added, it interacts with the lipids of the cell membrane. A gram-negative cell loses its outer lipopolysaccharide membrane, and the inner peptidoglycan layer is left exposed: when safranin is added they will turn red. Conversely, gram-positives retain the Cristal violet and will color in purple
How was osmosis used to stop Clark's seizures?
Answer:
after Clark was treated with a hypertonic solution? increased Na concentration in matrix of brain caused water from blood to move in to the brain which increased the matrix pressure. Pressure caused the neuron firing rate to increase which increased the likelihood of seizures.
Explanation:
Like replication and transcription, translation is a process in which the information present within a nucleic acid template is used to guide the synthesis of a new polymer. But the translation machinery is much more complex than the machinery involved in replication or transcription. Discuss the aspects of translation that make it so challenging for the cell.
Answer:
The aspect of translation that makes it so challenging for the cell is that it involves too many steps and too many molecules and organelles. mRNA associated with rRNA and tRNA. rRNA reading mRNA in a specific direction. Codon sequences indicating where to start and where to finish the synthesis. Different codons codifying for different aminoacids and tRNA recognizing those codons to add the correct amino acid to the chain. If the protein is destined to exportation, RER and Golgi complex are also involved in the process.
Explanation:
In protein synthesis, the first step is to synthesize messenger RNA, mRNA. The transcription is the coping process of the DNA section, and it happens in the nucleus. After that, the translation occurs when the formed mRNA moves to the cytoplasm through the nucleus membrane pores.
Once in the cytoplasm, it begins the translation process. mRNA meets a free ribosome, which is the primary structure for protein synthesis. Ribosomes are composed of two subunits, a big one and a small one. They also associate with different tRNA that carrying amino acids. Ribosomes might be floating freely in the cytoplasm or can be attached to the rough endoplasmic reticulum.
The ribosome reads mRNA in the 5´ to 3´ direction, and, according to the codons that are being readen, tRNA transfers the correct amino acids to build the polypeptide chain. Each tRNA has two important sites. One of them that couples with the codon of the mRNA molecule, named anticodon. The other site couples with an amino acid through the action of the aminoacyl-tRNA synthase enzyme. The whole complex, amino acid + enzyme + tRNA is named aminoacyl-tRNA. Considering that there are twenty amino acids available, there are also twenty complexes of aminoacyl-tRNA, one for each amino acid. tRNA allows amino acids to align according to the nucleotidic sequence in the mRNA molecule.
Once the new amino acid links to the growing peptidic chain, the binding between the amino acid and the tRNA molecule breaks. The tRNA is now free to join another amino acid and repeat the cycle.
The protein is synthesized from the amino terminus to the carboxy terminus, while the added amino acids to the chain are coded by a codon formed by three bases in the mRNA. mARNs also have a start and end codon that are the signals of the synthesis initiation and finish. When the ribosome reaches the end codon, protein synthesis is over.
And if the protein is destined for exportation or cell membrane, its synthesis also involved organelles like the Rough endoplasmic reticulum and the Golgi complex.
. Students decide to remove the litter from an abandoned park and plant trees. Which of the following observations provides the best evidence that the action of the students has had a positive effect on the health of the park ecosystem?
A. The number of human visitors decreases.
B.The level of yearly precipitation increases.
C.The number and diversity of animals increases.
D.The average daily high temperature decreases.
Answer:
c
Explanation:
*WILL MARK BRAINLIEST*
examples for
DNA and Biochemistry
in your own words, not searched please.
Answer:
Embruology: The studies of how an embryo develop, the study on how chicken embryo develop is an example of Embryology.
Fossils: Example are remains of bones or dead plants.
Dna and Biochemistry: Hair, Saliva, Blood are some example of DNA which can be analyzed
Thank me latur
What is the function of a cell's nucleus?
It controls all the functions of a cell.
It stores the food, water and wastes in a cell,
It holds the cell together
It helps the cell take in nutrients
Answer:
It controls all the functions of a cell.
Explanation:
A population of insects became divided when a flood created a lake in the middle of the original population. After many generations, the divided populations differ from each other in several traits such as wing color. Which process likely occurred
Answer:
the process is called allopatric speciation
Explanation:
when two organism separate each other by a geographical barrier or gepgraphical separation (because of flood) it is likely that the two organisms will evolve another certain characteristics.
Describe the 6 phases of developing a vaccine
Answer:
Exploratory stage
Pre-clinical stage
Clinical development
Regulatory review and approval
Manufacturing
Quality control
Explanation:
Internet
Explanation:
there are many stages to a vaccine
many come from ... developing symptoms
in which some case can come from
some quality control, pre-clinical control or even exploratory stage
How energy moves through an ecosystem can be represented by...
A. Food chain
B. Food web
C. Energy pyramids
D. All the above
Predict: How do you think a period of hot summers will affect the rabbit population?
Using the mRNA Codon Chart #1, the codon GCA codes for the amino acid ...?
Answer:
Ala-nine
Explanation:
Using the Codon Chart, the codon GCA codes for Ala-nine
In 1847, the German biologist Christian Bergmann noted that mammals and birds living at higher latitudes (farther from the equator) are on average larger and bulkier than related species found at lower latitudes. Suggest an evolutionary hypothesis to explain this observation.
Answer:
not quite sure how to do the hypothesis but its likely to be something to do with the fact that they need more fat and muscle due to the thinner atmosphere as respiration is harder to occur.
Explanation:
Why do large islands usually have more species than smaller islands?
Answer: Reason Why
Explanation: A bigger target is easier to hit than a small one, and a big island is more likely to have species land on it by chance than a small one is. Larger islands have more space than smaller islands, so there are likely to be more resources available for species to use. The opposite is true for smaller islands.